On 5. Jan, 2010, at 19:55 , Alexander Neundorf wrote: > On Tuesday 05 January 2010, Michael Wild wrote: >> On 4. Jan, 2010, at 19:15 , Alexander Neundorf wrote: >> [snip] >> >>>> - There is no distinction between install prefixes for the target and >>>> the host. Sometimes I'd like to put various build tools on the host >>>> system at the same time as libs and binaries on the target root. >>> >>> In CMake one build tree uses one toolchain. So in one build tree you can >>> only create executable which run either for the target, of for the host, >>> not both in one go. >>> So if you need first to create host build tools, and later on use them >>> for the actual cross compile, you need two build trees. I would recommend >>> to "export" the executable and "import" them again in the cross build. >>> >>> If this is not your problem, but really just the install location, you >>> can set the install location of every install() command separately, this >>> is completely independent from the cross compiling support. >> >> To automate this you can use the ExternalProject.cmake that comes with >> CMake-2.8 to build the host tools. > > Maybe, I haven't tried to combine this yet. > >> You can then use add_executable(tool >> IMPORTED) and set_target_properties(tool PROPERTIES IMPORTED_LOCATION ...) >> to import the tool target into the cross-compiling project. > > That's not necessary to do manually. You can use the EXPORT feature for the > necessary executables, something like this: > If you don't want to install the project first, you can add an > if(NOT CMAKE_CROSSCOMPILING) > export(TARGETS ... ) > endif(NOT CMAKE_CROSSCOMPILING) > to create such a export file in the buildtree. > > Alex >
I thought of that too, but then you have to run CMake a second time after the first build failed because the export file won't be created until build-time. Chicken-egg thing again :-( Michael _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
